1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
|
/*-
* Copyright (c) 2002-2003 Networks Associates Technology, Inc.
* Copyright (c) 2004-2011 Dag-Erling Smørgrav
* All rights reserved.
*
* This software was developed for the FreeBSD Project by ThinkSec AS and
* Network Associates Laboratories, the Security Research Division of
* Network Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035
* ("CBOSS"), as part of the DARPA CHATS research program.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id: openpam.h 455 2011-10-29 18:31:11Z des $
*/
#ifndef SECURITY_OPENPAM_H_INCLUDED
#define SECURITY_OPENPAM_H_INCLUDED
/*
* Annoying but necessary header pollution
*/
#include <stdarg.h>
#include <security/openpam_attr.h>
#ifdef __cplusplus
extern "C" {
#endif
struct passwd;
/*
* API extensions
*/
int
openpam_borrow_cred(pam_handle_t *_pamh,
const struct passwd *_pwd)
OPENPAM_NONNULL((1,2));
int
openpam_subst(const pam_handle_t *_pamh,
char *_buf,
size_t *_bufsize,
const char *_template);
void
openpam_free_data(pam_handle_t *_pamh,
void *_data,
int _status);
void
openpam_free_envlist(char **_envlist);
const char *
openpam_get_option(pam_handle_t *_pamh,
const char *_option);
int
openpam_restore_cred(pam_handle_t *_pamh)
OPENPAM_NONNULL((1));
int
openpam_set_option(pam_handle_t *_pamh,
const char *_option,
const char *_value);
int
pam_error(const pam_handle_t *_pamh,
const char *_fmt,
...)
OPENPAM_FORMAT ((__printf__, 2, 3))
OPENPAM_NONNULL((1,2));
int
pam_get_authtok(pam_handle_t *_pamh,
int _item,
const char **_authtok,
const char *_prompt)
OPENPAM_NONNULL((1,3));
int
pam_info(const pam_handle_t *_pamh,
const char *_fmt,
...)
OPENPAM_FORMAT ((__printf__, 2, 3))
OPENPAM_NONNULL((1,2));
int
pam_prompt(const pam_handle_t *_pamh,
int _style,
char **_resp,
const char *_fmt,
...)
OPENPAM_FORMAT ((__printf__, 4, 5))
OPENPAM_NONNULL((1,4));
int
pam_setenv(pam_handle_t *_pamh,
const char *_name,
const char *_value,
int _overwrite)
OPENPAM_NONNULL((1,2,3));
int
pam_vinfo(const pam_handle_t *_pamh,
const char *_fmt,
va_list _ap)
OPENPAM_FORMAT ((__printf__, 2, 0))
OPENPAM_NONNULL((1,2));
int
pam_verror(const pam_handle_t *_pamh,
const char *_fmt,
va_list _ap)
OPENPAM_FORMAT ((__printf__, 2, 0))
OPENPAM_NONNULL((1,2));
int
pam_vprompt(const pam_handle_t *_pamh,
int _style,
char **_resp,
const char *_fmt,
va_list _ap)
OPENPAM_FORMAT ((__printf__, 4, 0))
OPENPAM_NONNULL((1,4));
/*
* Read cooked lines.
* Checking for _IOFBF is a fairly reliable way to detect the presence
* of <stdio.h>, as SUSv3 requires it to be defined there.
*/
#ifdef _IOFBF
char *
openpam_readline(FILE *_f,
int *_lineno,
size_t *_lenp)
OPENPAM_NONNULL((1));
#endif
/*
* Log levels
*/
enum {
PAM_LOG_DEBUG,
PAM_LOG_VERBOSE,
PAM_LOG_NOTICE,
PAM_LOG_ERROR
};
/*
* Log to syslog
*/
void
_openpam_log(int _level,
const char *_func,
const char *_fmt,
...)
OPENPAM_FORMAT ((__printf__, 3, 4))
OPENPAM_NONNULL((3));
#if defined(__STDC_VERSION__) && (__STDC_VERSION__ >= 199901L)
#define openpam_log(lvl, ...) \
_openpam_log((lvl), __func__, __VA_ARGS__)
#elif defined(__GNUC__) && (__GNUC__ >= 3)
#define openpam_log(lvl, ...) \
_openpam_log((lvl), __func__, __VA_ARGS__)
#elif defined(__GNUC__) && (__GNUC__ >= 2) && (__GNUC_MINOR__ >= 95)
#define openpam_log(lvl, fmt...) \
_openpam_log((lvl), __func__, ##fmt)
#elif defined(__GNUC__) && defined(__FUNCTION__)
#define openpam_log(lvl, fmt...) \
_openpam_log((lvl), __FUNCTION__, ##fmt)
#else
void
openpam_log(int _level,
const char *_format,
...)
OPENPAM_FORMAT ((__printf__, 2, 3))
OPENPAM_NONNULL((2));
#endif
/*
* Generic conversation function
*/
struct pam_message;
struct pam_response;
int openpam_ttyconv(int _n,
const struct pam_message **_msg,
struct pam_response **_resp,
void *_data);
extern int openpam_ttyconv_timeout;
/*
* Null conversation function
*/
int openpam_nullconv(int _n,
const struct pam_message **_msg,
struct pam_response **_resp,
void *_data);
/*
* PAM primitives
*/
enum {
PAM_SM_AUTHENTICATE,
PAM_SM_SETCRED,
PAM_SM_ACCT_MGMT,
PAM_SM_OPEN_SESSION,
PAM_SM_CLOSE_SESSION,
PAM_SM_CHAUTHTOK,
/* keep this last */
PAM_NUM_PRIMITIVES
};
/*
* Dummy service module function
*/
#define PAM_SM_DUMMY(type) \
PAM_EXTERN int \
pam_sm_##type(pam_handle_t *pamh, int flags, \
int argc, const char *argv[]) \
{ \
\
(void)pamh; \
(void)flags; \
(void)argc; \
(void)argv; \
return (PAM_IGNORE); \
}
/*
* PAM service module functions match this typedef
*/
struct pam_handle;
typedef int (*pam_func_t)(struct pam_handle *, int, int, const char **);
/*
* A struct that describes a module.
*/
typedef struct pam_module pam_module_t;
struct pam_module {
char *path;
pam_func_t func[PAM_NUM_PRIMITIVES];
void *dlh;
};
/*
* Source-code compatibility with Linux-PAM modules
*/
#if defined(PAM_SM_AUTH) || defined(PAM_SM_ACCOUNT) || \
defined(PAM_SM_SESSION) || defined(PAM_SM_PASSWORD)
# define LINUX_PAM_MODULE
#endif
#if defined(LINUX_PAM_MODULE) && !defined(PAM_SM_AUTH)
# define _PAM_SM_AUTHENTICATE 0
# define _PAM_SM_SETCRED 0
#else
# undef PAM_SM_AUTH
# define PAM_SM_AUTH
# define _PAM_SM_AUTHENTICATE pam_sm_authenticate
# define _PAM_SM_SETCRED pam_sm_setcred
#endif
#if defined(LINUX_PAM_MODULE) && !defined(PAM_SM_ACCOUNT)
# define _PAM_SM_ACCT_MGMT 0
#else
# undef PAM_SM_ACCOUNT
# define PAM_SM_ACCOUNT
# define _PAM_SM_ACCT_MGMT pam_sm_acct_mgmt
#endif
#if defined(LINUX_PAM_MODULE) && !defined(PAM_SM_SESSION)
# define _PAM_SM_OPEN_SESSION 0
# define _PAM_SM_CLOSE_SESSION 0
#else
# undef PAM_SM_SESSION
# define PAM_SM_SESSION
# define _PAM_SM_OPEN_SESSION pam_sm_open_session
# define _PAM_SM_CLOSE_SESSION pam_sm_close_session
#endif
#if defined(LINUX_PAM_MODULE) && !defined(PAM_SM_PASSWORD)
# define _PAM_SM_CHAUTHTOK 0
#else
# undef PAM_SM_PASSWORD
# define PAM_SM_PASSWORD
# define _PAM_SM_CHAUTHTOK pam_sm_chauthtok
#endif
/*
* Infrastructure for static modules using GCC linker sets.
* You are not expected to understand this.
*/
#if !defined(PAM_SOEXT)
# define PAM_SOEXT ".so"
#endif
#if defined(OPENPAM_STATIC_MODULES)
# if !defined(__GNUC__)
# error "Don't know how to build static modules on non-GNU compilers"
# endif
/* gcc, static linking */
# include <sys/cdefs.h>
# include <linker_set.h>
# define PAM_EXTERN static
# define PAM_MODULE_ENTRY(name) \
static char _pam_name[] = name PAM_SOEXT; \
static struct pam_module _pam_module = { \
.path = _pam_name, \
.func = { \
[PAM_SM_AUTHENTICATE] = _PAM_SM_AUTHENTICATE, \
[PAM_SM_SETCRED] = _PAM_SM_SETCRED, \
[PAM_SM_ACCT_MGMT] = _PAM_SM_ACCT_MGMT, \
[PAM_SM_OPEN_SESSION] = _PAM_SM_OPEN_SESSION, \
[PAM_SM_CLOSE_SESSION] = _PAM_SM_CLOSE_SESSION, \
[PAM_SM_CHAUTHTOK] = _PAM_SM_CHAUTHTOK \
}, \
}; \
DATA_SET(_openpam_static_modules, _pam_module)
#else
/* normal case */
# define PAM_EXTERN
# define PAM_MODULE_ENTRY(name)
#endif
#ifdef __cplusplus
}
#endif
#endif /* !SECURITY_OPENPAM_H_INCLUDED */
|